<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
   <div>
       <form method='post' action="liu">
          <span> 名字</span> <input name="name" type="text" required>
           <button  type="submit">点击
           </button>

       </form>

   </div>

</body>
</html>